Agilent Technologies E6385A Insertion Loss Measurement

Performing Tests

Insertion Loss Measurement

Chapter 4

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Insertion Loss Measurement

This measurement determines the loss associated with RF cables, filters, and other

passive devices in the measurement path. This test uses the Test Set internal source and

measures the relative loss through the cable or device.

To optimize measurement accuracy, the measurement setup diagram indicates the use of

two external 6-dB attenuators (pads) and a short calibration cable. The pads are

optional, but should be used if available. These parts are not standard equipment with

the Test Set, but are included in the optional accessory kits (see “Accessory Kits” on page

17).

This test sends no control commands to the MSC.

Parameters and Specifications Used

The following specifications and parameters are used when running this test. See

Chapter 5, “Reference,” for descriptions of the specifications and parameters.

Parameters:

• None used for this test.

Specifications (Pass/Fail Limits):

• None used for this test.

Select and Run the Test

Perform the Insertion Loss Measurement as follows:

Step 1. From the Lucent CDMA Tests Main Menu screen, select the Calibration/Utilities

field. The Test Software will display the Calibration/Utilities Menu screen.

Step 2. Select the Insertion L oss Test field.

Step 3. If prompted to do so, remove the RF connections from the Test Set and press the k1

(Proceed) key to perform a channel power calibration. If channel power was recently

calibrated, the Test Software might not prompt you to re-calibrate before starting the

Insertion Loss test.

Step 4. Select the Loss Measur ement Typ e field and select the following:

•Swept will measure the loss over the frequency range that you specify in the Start

Frequency and Stop Frequenc y settings. The Maximum Expected Loss for the

device to be tested will be used to adjust the scale on the results plot. Use a value

slightly greater than expected for the best display resolution. The Duplex Out Level

into the device being tested may be adjusted if necessary.

•Discrete will measure the loss at the frequency that you specify by entering the

Channel Numbe r to be tested.

Step 5. Press the k1 (Proceed) key to start the measurement.

Step 6. Connect the short calibration cable as directed, and then press the k1 (Proceed) key.

Contents

Main Restricted Rights Legend Copyright Trademark Acknowledgements Page Page Page Page Page In this Manual Conventions Used Page Test Software Overview Who should use the Test Software? Included with the Test Software Test Software Operation Overview Required Equipment Test Equipment Personal Computer (PC) Cables and Adapters Product Description Required Equipment 16 Chapter 1 Figure 1-2 Required Equipment You Must Supply: Test Equipment Required: Optional Equipment GPS Time and Frequency Reference Receiver Accessory Kits Page Page Getting Help, Test Software Upgrades, and Training Page Page Loading and Running the Test Software 5 7 8 109 6 Navigating the Test Software Main Menu Functions Changing Settings and Using USER Keys Operating the BTS Laptop Utility Program System Requirements for BTS Laptop Utility Program Installing the BTS Laptop Utility Program Configuring the Test Set and PC Serial Ports for Communication with the Test Set Page Configuring the PC to Communicate with the MSC Connecting the PC to the Test Set and the MSC Connecting the PC to the Test Set Connecting the PC to the MSC Page Page Determining the Test Set to Site Equipment Connections Which Clock to Use SCT Clock or External Reference? Which Test Set Port to Use ANT IN or RF IN/OUT? Which Base Station Port to Use TX Test or TX Antenna? Out-of-Service Testing Using the Base Station TX Antenna Port Configuring the Test Software Test Configuration Page Base Station Configuration Page Establishing a Connection with the MSC for Testing Establishing a Direct-Dial Modem Connection Establishing a Telnet Connection Page Page Chapter 3 46 Test Set to Base Station Connections inservc1.eps 8935 CDMA LUCENT ALM NVM ACT TST CLK AIP Chapter 3 48 Figure 3-3 Series II Base Station Test Port (In Service) Connections end of cable in the switch panel. Antenna Interface Frame Antenna Interface Frame SCT Card E6380 Test Set Test Set to GPS Time and Frequency Reference Receiver Connections Page Page Calibrating the Test Setup Selecting Tests Running Tests For More Information Transmit Power Calibration Test (Autoplex Series II) Page Transmit Power Calibration Test (PCS Minicell) Test Set-Up Procedure Page Page Pilot Only Test Page Code Domain Tests Page Automated BBA Test Page Spectrum Analyzer Test Page Code Domain Analyzer Test Page * * CDMA Analyzer Test Page TX Antenna Port Cable Calibration Test Select and Run the Utility TX Test Port Cable Calibration Test Select and Run the Utility TX Test Port Calibration Test Page PN Offset Search Test Insertion Loss Measurement Page Return Loss Measurement Page Emission BW & Spurious Test Spurious Emissions Measurement Emission Bandwidth Measurement Page Page Page Accessing Test Software Functions SOFTWARE MENU Screen Overview Loading a Test Procedure Loading the Test Software Card and Procedure Chapter 5 93 Figure 5-4 Loading a Procedure 5 7 8 109 6 Customizing a Test Procedure Changing Test Parameters 96 Figure 5-7 Changing Test Parameters 1 3 5 4 7 4 6 Changing Pass/Fail Limits Chapter 5 99 Figure 5-10 Changing Pass/Fail Limits 1 3 4 5 100 6 7 8 9 10 Saving/Deleting a Procedure 102 Figure 5-13 Saving a Test Procedure 1 4 3 5 Chapter 5 103 6 7 9 11 8 12 13 15 14 . BTS Laptop Utility Program Windows Switch Terminal Window Test Set Terminal Window Other Data Window Test Results Window Test Set Screen Capture Window Demo (Demonstration) Mode Selecting the DEMO Procedure Selecting Demo Mode Using the Control Parameter Exiting the Demo Mode Parameters 6. Page Page Page Specifications (Pass/Fail Limits) Page Testing without MSC Control Using a PC Card Initializing a PC Card Troubleshooting PC Card Use Page Error Summary Overview Troubleshooting the Test Software Installation Errors When Loading and Running the Test Software all Communication Errors Errors When First Setting Up or Connecting to MSC Communication Errors During Testing Troubleshooting Checks for Communication Problems Errors While Attempting Measurements Page Acronyms and Meanings